64930445 has 4 divisors (see below), whose sum is σ = 77916540. Its totient is φ = 51944352.

The previous prime is 64930441. The next prime is 64930447. The reversal of 64930445 is 54403946.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10259209 + 54671236 = 3203^2 + 7394^2 .

It is a cyclic number.

It is not a de Polignac number, because 64930445 - 2² = 64930441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64930441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6493040 + ... + 6493049.

It is an arithmetic number, because the mean of its divisors is an integer number (19479135).

Almost surely, 2^64930445 is an apocalyptic number.

It is an amenable number.

64930445 is a deficient number, since it is larger than the sum of its proper divisors (12986095).

64930445 is a wasteful number, since it uses less digits than its factorization.

64930445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12986094.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 64930445 is about 8057.9429757228. The cubic root of 64930445 is about 401.9291084781.

The spelling of 64930445 in words is "sixty-four million, nine hundred thirty thousand, four hundred forty-five".